What animal category is an octopus?

What animal category is an octopus?

cephalopods
Octopuses (or octopi, if you prefer) are cephalopods, invertebrates that also include squid and cuttlefish. They have bulbous heads, large eyes, and eight very useful arms. “Cephalopod” is Greek for “head-foot,” which makes sense, since their limbs are attached directly to their head.

Is an octopus a vertebrate or invertebrate?

The octopus is an invertebrate, meaning that it does not have a backbone. Octopuses, squid, cuttlefish, and nautiluses make up the cephalopod group (cephalopoda, from the Latin for “head-foot”).

Is an octopus a carnivore or a herbivore?

Diet. Octopuses are carnivores, which means they eat meat. Meals can include clams, shrimp, lobsters, fish, sharks and even birds. Octopuses typically drop down on their prey, envelop it with their arms and pull the animal into their mouth.

How is an octopus classified?

The broadest level is kingdom, followed by phylum, class, order, family, genus and species. All octopuses belong to the order Octopoda. Octopoda is part of the class Cephalopoda, meaning that octopuses are cephalopods. Cephalopoda is part of the phylum Mollusca, meaning that octopuses are also mollusks.

Why is an octopus considered a mollusk?

These are mollusks with two shells that they can close up tight for protection. Finally there is Cephalopoda , the squids and octopuses. They only live in salt water, so we won’t say much about them here. They have no shells, but are larger, smarter, and faster than their relatives in the other groups.

What is classification and description of octopus?

octopuses/octopi, see below for variants) are soft-bodied, eight-limbed molluscs of the order Octopoda (/ɒkˈtɒpədə/, ok-TOP-ə-də). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids.

Is there a relationship between an octopus and a coelenterate polyp?

There is no actual relationship whatever be tween a Coelenterate polyp and an octopus, the comparison hav ing been suggested by the fact that both of them possess mobile tentacles.

What makes a Coelenterata a multicellular organism?

Coelenterates are multicellular organisms and can be found living solitarily or also in groups. They can also be found sedentary or swimming about freely. The Phylum Coelenterata consists of marine organisms that have a body that is radially symmetrical and a mouth that has sensory tentacles that help in capturing prey easily.

What kind of Nutrition does a Coelenterata have?

Coelenterates have a holozoic form of nutrition. The mouths of these organisms are encircled with tentacles which have nematocysts. There is no presence of an anus in these organisms; the mouth is responsible for both ingestion and elimination. Coelenterates have tentacles that help them capture their prey, eat and digest it.

Which is the simplest animal in the phylum Coelenterata?

Other animals belonging to the Phylum Coelenterata are hydra, comb jellies, true jellies, sea pens, coral animals, sea anemones and more. Usually known to be the simplest of all animals groups, Coelenterates have true tissues and the gastrovascular cavity, which is the characteristic coelenteron.